Move some Utils functions to AppDbContext

Elwig/Helpers/AppDbContext.cs

@@ -1,5 +1,7 @@
 using Microsoft.EntityFrameworkCore;
 using Elwig.Models;
+using System.Linq;
+using System.Threading.Tasks;
 
 namespace Elwig.Helpers {
     public class AppDbContext : DbContext {
@@ -27,5 +29,27 @@ namespace Elwig.Helpers {
             optionsBuilder.UseLazyLoadingProxies();
             base.OnConfiguring(optionsBuilder);
         }
+
+        public async Task<bool> MgNrExists(int mgnr) {
+            return await Members.FindAsync(mgnr) != null;
+        }
+
+        public async Task<bool> VNrExists(int vnr) {
+            return await Contracts.FindAsync(vnr) != null;
+        }
+
+        public async Task<int> NextMgNr() {
+            int c = await Members.Select(m => m.MgNr).MinAsync();
+            (await Members.OrderBy(m => m.MgNr).Select(m => m.MgNr).ToListAsync())
+                .ForEach(a => { if (a <= c + 100) c = a; });
+            return c + 1;
+        }
+
+        public async Task<int> NextVNr() {
+            int c = await Contracts.Select(co => co.VNr).MinAsync();
+            (await Contracts.OrderBy(co => co.VNr).Select(co => co.VNr).ToListAsync())
+                .ForEach(a => { if (a <= c + 100) c = a; });
+            return c + 1;
+        }
     }
 }

Elwig/Helpers/Utils.cs

@@ -86,27 +86,5 @@ namespace Elwig.Helpers {
                 UseShellExecute = true,
             });
         }
-
-        public static async Task<bool> MgNrExists(AppDbContext ctx, int mgnr) {
-            return await ctx.Members.FindAsync(mgnr) != null;
-        }
-
-        public static async Task<bool> VNrExists(AppDbContext ctx, int vnr) {
-            return await ctx.Contracts.FindAsync(vnr) != null;
-        }
-
-        public static async Task<int> NextMgNr(AppDbContext ctx) {
-            int c = await ctx.Members.Select(m => m.MgNr).MinAsync();
-            (await ctx.Members.OrderBy(m => m.MgNr).Select(m => m.MgNr).ToListAsync())
-                .ForEach(a => { if (a <= c + 100) c = a; });
-            return c + 1;
-        }
-
-        public static async Task<int> NextVNr(AppDbContext ctx) {
-            int c = await ctx.Contracts.Select(co => co.VNr).MinAsync();
-            (await ctx.Contracts.OrderBy(co => co.VNr).Select(co => co.VNr).ToListAsync())
-                .ForEach(a => { if (a <= c + 100) c = a; });
-            return c + 1;
-        }
     }
 }

Elwig/Helpers/Validator.cs

@@ -265,7 +265,7 @@ namespace Elwig.Helpers {
             }
 
             int nr = int.Parse(input.Text);
-            if (nr != m?.MgNr && Utils.MgNrExists(ctx, nr).GetAwaiter().GetResult()) {
+            if (nr != m?.MgNr && ctx.MgNrExists(nr).GetAwaiter().GetResult()) {
                 return new(false, "Mitgliedsnummer wird bereits verwendet");
             }
 
@@ -278,7 +278,7 @@ namespace Elwig.Helpers {
                 return res;
             } else if (!required && input.Text.Length == 0) {
                 return new(true, null);
-            } else if (!Utils.MgNrExists(ctx, int.Parse(input.Text)).GetAwaiter().GetResult()) {
+            } else if (!ctx.MgNrExists(int.Parse(input.Text)).GetAwaiter().GetResult()) {
                 return new(false, "Ein Mitglied mit dieser Mitgliedsnummer existiert nicht");
             }
 
@@ -304,7 +304,7 @@ namespace Elwig.Helpers {
             }
 
             int nr = int.Parse(input.Text);
-            if (nr != c?.VNr && Utils.VNrExists(ctx, nr).GetAwaiter().GetResult()) {
+            if (nr != c?.VNr && ctx.VNrExists(nr).GetAwaiter().GetResult()) {
                 return new(false, "Vertragsnummer wird bereits verwendet");
             }
 

Elwig/Windows/AreaCommAdminWindow.xaml.cs

@@ -335,7 +335,7 @@ namespace Elwig.Windows {
         }
 
         private async void InitInputs() {
-            VNrInput.Text = ContractList.SelectedItem == null ? (await Utils.NextVNr(Context)).ToString() : ((Contract)ContractList.SelectedItem).VNr.ToString();
+            VNrInput.Text = ContractList.SelectedItem == null ? (await Context.NextVNr()).ToString() : ((Contract)ContractList.SelectedItem).VNr.ToString();
             MgNrInput.Text = member.MgNr.ToString();
             FillOriginalValues();
             ValidateRequiredInputs();

Elwig/Windows/MemberAdminWindow.xaml.cs

@@ -94,7 +94,7 @@ namespace Elwig.Windows {
         }
 
         private async void InitInputs() {
-            MgNrInput.Text = (await Utils.NextMgNr(Context)).ToString();
+            MgNrInput.Text = (await Context.NextMgNr()).ToString();
             EntryDateInput.Text = DateTime.Now.ToString("dd.MM.yyyy");
             if (Context.Branches.Count() == 1)
                 BranchInput.SelectedItem = Context.Branches.First();